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    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

807 SE Schematic Critiques

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So you suggest using a 6N7 in place of a 6SL7? Will that provide enough gain (I need to go from line level to 64V P-P, preferably with one tube) to drive the 807?

Also, I would like to keep everything octal; hence I'm not using a 6N1P or something similar.

If I go with LEDs for cathode bias, do I need to use a bypass capacitor?

Kyle
 
Hi!

The 6N7 has a mu of 35. With 50k plate load you will get a gain of slightly under 30. Linelevel is 2V RMS which is 5,6V pp So the 6N7 driver will be able to amplify that up to 150Vpp.

6SL7 will work. Better if you parallel them per channel. I think the 6N7 has the advantage of more headroom over the 6SL7.

But why don't you try it. Wire the amp up for 6SL7 have a listen then rewire for 6N7. Keep what you like best

Thomas
 
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